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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*************************************************************************
 *
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * Copyright 2000, 2010 Oracle and/or its affiliates.
 *
 * OpenOffice.org - a multi-platform office productivity suite
 *
 * This file is part of OpenOffice.org.
 *
 * OpenOffice.org is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License version 3
 * only, as published by the Free Software Foundation.
 *
 * OpenOffice.org is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License version 3 for more details
 * (a copy is included in the LICENSE file that accompanied this code).
 *
 * You should have received a copy of the GNU Lesser General Public License
 * version 3 along with OpenOffice.org.  If not, see
 * <http://www.openoffice.org/license.html>
 * for a copy of the LGPLv3 License.
 *
 ************************************************************************/

#ifndef SDEXT_PRESENTER_PRESENTER_FRAMEWORK_OBSERVER_HXX
#define SDEXT_PRESENTER_PRESENTER_FRAMEWORK_OBSERVER_HXX

#include <com/sun/star/drawing/framework/XConfigurationChangeListener.hpp>
#include <com/sun/star/drawing/framework/XConfigurationController.hpp>
#include <cppuhelper/basemutex.hxx>
#include <cppuhelper/compbase1.hxx>
#include <boost/function.hpp>
#include <boost/noncopyable.hpp>

namespace css = ::com::sun::star;

namespace sdext { namespace presenter {

typedef ::cppu::WeakComponentImplHelper1 <
    ::com::sun::star::drawing::framework::XConfigurationChangeListener
    > PresenterFrameworkObserverInterfaceBase;

/** Watch the drawing framework for changes and run callbacks when a certain
    change takes place.
*/
class PresenterFrameworkObserver
    : private ::boost::noncopyable,
      private ::cppu::BaseMutex,
      public PresenterFrameworkObserverInterfaceBase
{
public:
    typedef ::boost::function<bool(void)> Predicate;
    typedef ::boost::function<void(bool)> Action;

    static void RunOnUpdateEnd (
        const css::uno::Reference<css::drawing::framework::XConfigurationController>&rxController,
        const Action& rAction);

    virtual void SAL_CALL disposing (void);
    virtual void SAL_CALL disposing (const css::lang::EventObject& rEvent)
        throw (css::uno::RuntimeException);
    virtual void SAL_CALL notifyConfigurationChange (
        const css::drawing::framework::ConfigurationChangeEvent& rEvent)
        throw (css::uno::RuntimeException);

private:
    ::rtl::OUString msEventType;
    ::css::uno::Reference<css::drawing::framework::XConfigurationController> mxConfigurationController;
    Predicate maPredicate;
    Action maAction;

    /** Create a new PresenterFrameworkObserver object.
        @param rsEventName
            An event name other than ConfigurationUpdateEnd.  When the
            observer shall only listen for ConfigurationUpdateEnd then pass
            an empty name.
        @param rPredicate
            This functor tests whether the action is to be executed or not.
        @param rAction
            The functor to execute when the predicate returns true,
            e.g. when some resource has been created.
    */
    PresenterFrameworkObserver (
        const css::uno::Reference<css::drawing::framework::XConfigurationController>&rxController,
        const ::rtl::OUString& rsEventName,
        const Predicate& rPredicate,
        const Action& rAction);
    virtual ~PresenterFrameworkObserver (void);

    void Shutdown (void);

    /** Predicate that always returns true.
    */
    static bool True (void);
};

} }  // end of namespace ::sdext::presenter

#endif

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